<template>
  <div>
    <!--面包屑导航区-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <!-- 提示区域 -->
      <el-alert title="商品信息添加" type="info" center show-icon :closable="false"></el-alert>
      <!-- 步骤区域 -->
      <el-steps :active="step - 0" align-center finish-status="success">
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- 表单区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
        <!-- tab区域 -->
        <el-tabs v-model="step" @tab-click="handleClick" :before-leave="beforeLeve" :tab-position="'left'">
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader v-model="addForm.goods_cat" :options="cateList" :props="catProps" @change="handleChange()"></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item :label="item.attr_name" v-for="item in manyList" :key="item.attr_id">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="cb" v-for="(cb, index ) in item.attr_vals" :key="index" border></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attr_name" v-for="item in onlyList" :key="item.attr_id">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload :action="uploadPath" :on-preview="handlePreview" :on-remove="handleRemove" :on-success="handleSuccess" :headers="header" list-type="picture">
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce" />
            <el-button type="primary" size="mini" style="margin-top:10px;" @click="saveGoods()">保存信息</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览窗口 -->
    <el-dialog title="图片预览" :visible.sync="previewVisible" width="50%">
      <img :src="previewPath" alt="">
    </el-dialog>
  </div>
</template>

<script lang="ts">
import { attr, categoriesList, addGoods } from "@/request/api";
import QuillEditor from "vue-quill-editor";
import "quill/dist/quill.core.css";
import "quill/dist/quill.snow.css";
import "quill/dist/quill.bubble.css";
import { ElForm } from "element-ui/types/form";
import _ from "lodash";
import Vue from "vue";
// import Component from "vue-class-component";
import { Ref, Component } from "vue-property-decorator";
@Component({
  components: QuillEditor,
})
export default class Add extends Vue {
  step: string = "0";
  addForm: {
    goods_name: string;
    goods_price: number;
    goods_weight: number;
    goods_number: number;
    goods_cat: Array<number>;
    pics: Array<{ pic: string }>;
    goods_introduce: string;
    attrs: Array<{ attr_id: number; attr_value: string }>;
  } = {
    goods_name: "",
    goods_price: 0,
    goods_weight: 0,
    goods_number: 0,
    goods_cat: [],
    pics: [],
    goods_introduce: "",
    attrs: [],
  };
  addFormRules: any = {
    goods_name: [
      { required: true, message: "请输入商品名称", trigger: "blur" },
    ],
    goods_price: [
      { required: true, message: "请输入商品价格", trigger: "blur" },
    ],
    goods_weight: [
      { required: true, message: "请输入商品重量", trigger: "blur" },
    ],
    goods_number: [
      { required: true, message: "请输入商品数量", trigger: "blur" },
    ],
    goods_cat: [{ required: true, message: "请选择商品分类", trigger: "blur" }],
  };
  // 商品分类数据
  cateList: [] = [];
  catProps: any = {
    label: "cat_name",
    value: "cat_id",
    children: "children",
    expandTrigger: "hover",
  };
  // 动态参数数据列表
  manyList: Array<any> = [];
  // 静态属性数据列表
  onlyList: [] = [];
  // 上传图片服务端路径
  uploadPath: string = "http://127.0.0.1:8888/api/private/v1/upload";
  // 手动的为上传图设置请求头
  header: any = {
    Authorization: window.sessionStorage.getItem("token"),
  };
  // 图片预览
  previewVisible: boolean = false;
  // 图片预览路径
  previewPath: string = "";
  created() {
    // 获取商品分类数据
    this.getCateList();
  }
  get getCateId() {
    console.log(this.addForm.goods_cat);
    if (this.addForm.goods_cat.length === 3) {
      return this.addForm.goods_cat[2];
    } else {
      return 0;
    }
  }
  // tab点击
  async handleClick() {
    if (this.step === "1") {
      // 获取动态参数数据
      const { data, meta } = await attr(this.getCateId, "many");
      if (meta.status !== 200) return;
      let target: Array<{
        attr_id: number;
        attr_name: string;
        attr_sel: string;
        attr_vals: Array<string>;
        attr_write: string;
        cat_id: number;
        delete_time: number;
      }> = [];
      data.forEach(
        (item: {
          attr_id: number;
          attr_name: string;
          attr_sel: string;
          attr_vals: string;
          attr_write: string;
          cat_id: number;
          delete_time: number;
        }) => {
          target.push({
            ...item,
            attr_vals:
              item.attr_vals.length === 0 ? [] : item.attr_vals.split(","),
          });
        }
      );
      this.manyList = target;
    } else if (this.step === "2") {
      // 获取静态属性数据
      const { data, meta } = await attr(this.getCateId, "only");
      if (meta.status !== 200) return;
      this.onlyList = data;
      console.log(this.onlyList);
    }
  }
  async getCateList() {
    const { data, meta } = await categoriesList();
    if (meta.status !== 200) return;
    this.cateList = data;
  }
  // 商品分类改变触发的函数
  handleChange() {
    // 只允许选择三级分类
    if (this.addForm.goods_cat.length !== 3) {
      this.addForm.goods_cat = [];
      return;
    }
    console.log(this.addForm.goods_cat);
  }
  // 阻止标签也切换
  beforeLeve(activeName: string, oldActiveName: string) {
    if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
      this.$message.error("请先选择商品分类");
      return false;
    }
  }
  // 图片预览处理事件
  handlePreview(file: any) {
    this.previewVisible = true;
    this.previewPath = file.response.data.url;
  }
  // 图片移除处理事件
  handleRemove(file: any) {
    console.log(file);
    const path = file.response.data.tmp_path;
    const index = this.addForm.pics.findIndex((x: { pic: string }) => {
      return x.pic === path;
    });
    this.addForm.pics.splice(index, 1);
  }
  // 图片上传成功处理事件
  handleSuccess(response: Ajax.AjaxRes) {
    let picInfo: {
      pic: string;
    } = {
      pic: response.data.tmp_path,
    };
    this.addForm.pics.push(picInfo);
  }
  @Ref("addFormRef") addFormRef!: ElForm;
  // 保存商品信息
  saveGoods() {
    this.addFormRef.validate(async (valid: boolean) => {
      if (!valid) return;
      // 深拷贝
      const form = _.cloneDeep(this.addForm);
      form.goods_cat = form.goods_cat.join(",");
      this.manyList.forEach(
        (item: {
          attr_id: number;
          attr_name: string;
          attr_sel: string;
          attr_vals: [];
          attr_write: string;
          cat_id: number;
          delete_time: null;
        }) => {
          const attr = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(","),
          };
          this.addForm.attrs.push(attr);
        }
      );
      this.onlyList.forEach(
        (item: {
          attr_id: number;
          attr_name: string;
          attr_sel: string;
          attr_vals: string;
          attr_write: string;
          cat_id: number;
          delete_time: null;
        }) => {
          const attr = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals,
          };
          this.addForm.attrs.push(attr);
        }
      );
      form.attrs = this.addForm.attrs;
      const { data, meta } = await addGoods(form);
      if (meta.status !== 201) return this.$message.error("添加商品失败");
      this.$message.success("添加商品成功");
      this.$router.push("/goods");
    });
  }
}
</script>

<style lang="less" scoped>
.el-checkbox {
  margin: 0 10px 0 !important;
}
</style>